Geometry

Holds a geometric primitive.

While the Geometry class itself is WebGL-independent and essentially a "mathematical" description of a geometrric primitive, it contains all the information needed to create WebGL Buffers and render the geometry.

Static Fields

Geometry.MODE

Corresponds to the WebGL draw mode constants.

Primitive Mode	Comment
`Geometry.MODE.POINTS`	-
`Geometry.MODE.LINES`	-
`Geometry.MODE.LINE_LOOP`	-
`Geometry.MODE.LINE_STRIP`	-
`Geometry.MODE.TRIANGLES`	-
`Geometry.MODE.TRIANGLE_STRIP`	-
`Geometry.MODE.TRIANGLE_FAN`	-

Fields

id : String

String id, mainly intended for debugging.

mode : Number

Describes how primitives are to be read from the vertex arrays. Will be a A valid WebGL draw mode, one of the Geometry.MODE constants.

drawMode : Number

Returns same value as mode.

attributes : Object

Returns an object map with attribute names as keys and attribute accessor objects as values.

Each accessor object will have at minimum:

A value field that is a typed array
A size field that indicates how many components per vertex.

indices : Object | undefined

If present, the indices will be an object that at minimum has:

A value field that is a typed array, either Uint32Array or Uint16Array
A size field that is always 1.

vertexCount

The number of vertices. If instances are present, this is the length of the instance array. Otherwise it is determined by vertex array and size.

Functions

constructor(props : Object)

props.mode (Number): The draw mode, one of the Geometry.MODE constants.
props.drawMode (Number): Alternative to props.mode, only one of them should be specified.
props.vertexCount= (Number): Optionally sets the number of vertices to draw.
props.attributes (Object): Map of attribute names to accessor objects.
props.indices= (Object | undefined): If supplied, an accessor object for the indices array.

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